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数据搜索系统，热门电子元器件搜索 |
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SP331 数据表(PDF) 5 Page - Sipex Corporation |
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SP331 数据表(HTML) 5 Page - Sipex Corporation |
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5 / 13 page  Date: 03-04-05 Programmable Dual RS-232/RS-485 Transceiver © Copyright 2005 Sipex Corporation 5 Figure 5. Driver Enable and Disable Times Figure 6. Receiver Propagation Delays VOH VOL RECEIVER OUT 1.5V 1.5V tPHL f = 1MHz; tR ≤ 10ns; tF ≤ 10ns OUTPUT V0D2+ V0D2– A – B 0V 0V tPLH INPUT Figure 4. Driver Propagation Delays SWITCHING WAVEFORMS +3V 0V DE 5V VOL A, B 0V 1.5V 1.5V tZL tZH f = 1MHz; tR < 10ns; tF < 10ns VOH A, B 2.3V 2.3V tLZ tHZ 0.5V 0.5V Output normally LOW Output normally HIGH +3V 0V DRIVER INPUT A B DRIVER OUTPUT VO+ DIFFERENTIAL OUTPUT VA – VB 0V VO– 1.5V 1.5V tPLH tF tR f ≥ 1MHz; tR ≤ 10ns; tF ≤ 10ns VO 1/2VO 1/2VO tPHL tSKEW = |tDPLH - tDPHL| tDPLH tDPHL |
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